45542 has 8 divisors (see below), whose sum is σ = 78096. Its totient is φ = 19512.

The previous prime is 45541. The next prime is 45553. The reversal of 45542 is 24554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 1640.

It is an arithmetic number, because the mean of its divisors is an integer number (9762).

2⁴⁵⁵⁴² is an apocalyptic number.

45542 is a deficient number, since it is larger than the sum of its proper divisors (32554).

45542 is a wasteful number, since it uses less digits than its factorization.

45542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262.

The product of its digits is 800, while the sum is 20.

The square root of 45542 is about 213.4057168869. The cubic root of 45542 is about 35.7111662037.

It can be divided in two parts, 455 and 42, that multiplied together give a triangular number (19110 = T₁₉₅).

The spelling of 45542 in words is "forty-five thousand, five hundred forty-two".